Imagine that you dropped a tiny brown rock on a sandy beach. Do you think you would be able to find it again? Finding Pluto was just about that hard or maybe harder. Once astronomers realized there might be another planet disturbing Uranus's and Neptune's orbits, they started searching through thousands of stars each night with their telescopes to see if they could find it. Almost a hundred years passed before Pluto was discovered. The early stargazers called the planets “wanderers” and Pluto certainly lives up to that name. Sometimes Pluto's orbit is closer to the sun than Neptune's while other times it is the farthest planet out in the solar system, leaving people to wonder if the two planets will eventually destroy each other when their orbits cross. Just like so many of the moons that always face their planets, the orbits of Neptune and Pluto are exactly spaced or in sync, so the planets will probably never be in the same place at the same time!Pluto and its moon, Charon, are tidally locked like so many of the other moons and planets; they disappear and reappear as they eclipse each other. Even though Pluto orbits the sun and has a moon, it now is considereda dwarf planet because it is so small.